Sepia effect

Walking along by the river I came to the place where a massive beech tree was felled by parasitic Ganoderma  shelf fungi a few years ago.
See here seven years ago.

The fungi are still living on the remaining trunk which must contain a great deal of nutrient.  Just now they are spreading their spores far and wide and in doing so thickly coating the area in  what looks like cocoa powder. 
The number of spores is beyond anything that a human brain can compute.
"Ganoderma applanatum  produces a perennial fruiting body, which may disperse 5.4 trillion spores over a six month period, from within the pores of the fruiting body."

Multiply that by... 10? and let your head explode!